<template>
  <div class="login">
    <div class="main">
      <img src="../assets/images/login-banner.png" class="banner" />
      <el-form ref="loginForm" :model="loginForm" :rules="loginRules" class="login-form">
        <h3 class="title">悟定考勤管理系统</h3>
        <el-form-item prop="username">
          <el-input v-model="loginForm.username" type="text" auto-complete="off" placeholder="请输入账号">
            <svg-icon slot="prefix" icon-class="user" class="el-input__icon input-icon" />
          </el-input>
        </el-form-item>
        <el-form-item prop="password">
          <el-input
            v-model="loginForm.password"
            type="password"
            auto-complete="off"
            placeholder="请输入密码"
            @keyup.enter.native="handleLogin"
          >
            <svg-icon slot="prefix" icon-class="password" class="el-input__icon input-icon" />
          </el-input>
        </el-form-item>
        <el-form-item prop="code" v-if="captchaEnabled">
          <el-input
            v-model="loginForm.code"
            auto-complete="off"
            placeholder="验证码"
            style="width: 63%"
            @keyup.enter.native="handleLogin"
          >
            <svg-icon slot="prefix" icon-class="validCode" class="el-input__icon input-icon" />
          </el-input>
          <div class="login-code">
            <img :src="codeUrl" @click="getCode" class="login-code-img" />
          </div>
        </el-form-item>
        <el-checkbox v-model="loginForm.rememberMe" style="margin:0px 20px 25px 0px;">记住密码</el-checkbox>
        <router-link class="link-type" :to="'/register'">找回密码</router-link>
        <el-form-item style="width:100%;">
          <el-button
            :loading="loading"
            size="medium"
            type="primary"
            style="width:100%; height: 40px"
            @click.native.prevent="handleLogin"
          >
            <span v-if="!loading">登 录</span>
            <span v-else>登 录 中...</span>
          </el-button>
          <div style="float: right;" v-if="register">
            <router-link class="link-type" :to="'/register'">立即注册</router-link>
          </div>
        </el-form-item>
      </el-form>
      <!--  底部  -->
      <div class="el-login-footer">
        <span>Copyright © 2019-2022 Wu-Ding All Rights Reserved.</span>
      </div>
    </div>
  </div>
</template>

<script>
import { getCodeImg } from "@/api/login";
import Cookies from "js-cookie";
import { encrypt, decrypt } from "@/utils/jsencrypt";

export default {
  name: "Login",
  data() {
    return {
      codeUrl: "",
      loginForm: {
        username: "admin",
        password: "admin",
        rememberMe: false,
        code: "",
        uuid: undefined
      },
      loginRules: {
        username: [
          { required: true, trigger: "blur", message: "请输入您的账号" }
        ],
        password: [
          { required: true, trigger: "blur", message: "请输入您的密码" }
        ],
        code: [{ required: true, trigger: "change", message: "请输入验证码" }]
      },
      loading: false,
      // 验证码开关
      captchaEnabled: false,
      // 注册开关
      register: false,
      redirect: undefined
    };
  },
  watch: {
    $route: {
      handler: function(route) {
        this.redirect = route.query && route.query.redirect;
      },
      immediate: true
    }
  },
  created() {
    this.getCode();
    this.getCookie();
  },
  methods: {
    getCode() {
      getCodeImg().then(res => {
        this.captchaEnabled =
          res.data === undefined ? true : res.captchaEnabled;
        if (this.captchaEnabled) {
          this.codeUrl = "data:image/gif;base64," + res.img;
          this.loginForm.uuid = res.uuid;
        }
      });
    },
    getCookie() {
      const username = Cookies.get("username");
      const password = Cookies.get("password");
      const rememberMe = Cookies.get("rememberMe");
      this.loginForm = {
        username: username === undefined ? this.loginForm.username : username,
        password:
          password === undefined ? this.loginForm.password : decrypt(password),
        rememberMe: rememberMe === undefined ? false : Boolean(rememberMe)
      };
    },
    handleLogin() {
      this.$refs.loginForm.validate(valid => {
        if (valid) {
          this.loading = true;
          if (this.loginForm.rememberMe) {
            Cookies.set("username", this.loginForm.username, { expires: 30 });
            Cookies.set("password", encrypt(this.loginForm.password), {
              expires: 30
            });
            Cookies.set("rememberMe", this.loginForm.rememberMe, {
              expires: 30
            });
          } else {
            Cookies.remove("username");
            Cookies.remove("password");
            Cookies.remove("rememberMe");
          }
          this.$store
            .dispatch("Login", this.loginForm)
            .then(() => {
              this.$router.push({ path: this.redirect || "/" }).catch(() => {});
            })
            .catch(() => {
              this.loading = false;
              if (this.captchaEnabled) {
                this.getCode();
              }
            });
        }
      });
    }
  }
};
</script>

<style rel="stylesheet/scss" lang="scss">
.login {
  display: flex;
  align-items: center;
  height: 100%;
  background-image: url("../assets/images/login-background.jpg");
  overflow: hidden;
}
.main {
  display: flex;
  align-items: center;
  height: 600px;
  width: 1000px;
  margin: auto;
  background-color: #fff;
  border-radius: 10px;
}
.banner {
  height: 380px;
  width: 400px;
  float: left;
  margin-top: 50%;
  margin-bottom: 50%;
  margin-left: 50px;
}
.title {
  margin: 20px auto 30px auto;
  text-align: center;
  color: #232323;
  font-size: 35px;
  font-weight: 700;
}
.el-button--primary {
    background-color: rgb(0, 84, 254);
    border-color: rgb(0, 84, 254);
}

.tab-div{
  color: rgb(0, 84, 254);
  font-weight: bolder;
  font-size: 15px;
}

.login-form {
  border-radius: 6px;
  background: #ffffff;
  border: 1px solid #e2e2e2;
  box-shadow: 5px 5px 5px #888888;
  width: 400px;
  height: 410px;
  padding: 30px 30px 5px 30px;
  margin: auto;
  float: left;
  .el-input {
    height: 40px;
    font-size: 17px;
    input {
      height: 40px;
    }
  }
  .input-icon {
    height: 40px;
    width: 20px;
    margin-left: 2px;
  }
}
.login-tip {
  font-size: 13px;
  text-align: center;
  color: #bfbfbf;
}
.login-code {
  width: 33%;
  height: 38px;
  float: right;
  img {
    cursor: pointer;
    vertical-align: middle;
  }
}
.el-login-footer {
  height: 40px;
  line-height: 40px;
  position: fixed;
  bottom: 0;
  width: 100%;
  text-align: center;
  color: #fff;
  font-family: Arial;
  font-size: 12px;
  letter-spacing: 1px;
}
.login-code-img {
  height: 38px;
}
</style>
